Alfeed musil



(no Model.)

' A MUSIL.

'STEAM GENERATOR; No. 373,783. Patented Nov. 22,1887.

77 3372 anyway i UNITED STATES PATENT OFFICE.

ALFRED MUSIL, OF STEYR, AUSTRLLHUNGARY.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 373,783, dated November 22, 1887.

Application filed January 5, 1887. Serial No.223A80. (No model.) Patented in Anstria-HnngaryMayQS),1886, No. 2,835 and No. 23,778; in Germany November 24, 1886, No. 39,657; in France November 24,1886; N0. 179, 867; in Belgium November 24,1886, No. 75,355, and in Italy December 31, 1886, XX, 20,820 and XLII,171.

To all whom it may concern.-

Be it known that I, ALFRED MUsIL, engineer, a subject of the Emperor of Austria-Hungary, residing at Steyr, in the Province of Upper Austria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Steam-Generators; and I do herebydeclare the following to be aful], clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification, and which improvements have been patented in the following countries: in Austria-Hungary May 29, 1886Vienna No. 2,835, Buda-Pesth No. 23,778; in Germany November 24, 1886, No. 39,657; in France November 24, 1886, No. 179,867; in Belgium November 24. 1886, No. 7 5,355, and in Italy December 31, 1886, Reg. Gen. Vol. XX, No. 20,820, Reg. Att. VoLXLII, No. 171.

This invention relates to an improved construction-of rotatorysteam generato rs, whereby the heat produced by the combustion of the fuel is utilized in a very perfect manner, the water being submitted to its action in comparatively thin layers within receptacles offering very extended heating-surfaces, so that steamcan be generated within a short time and at a low cost.

The rotating generator, which has very few joints requiring to be made steam-tight,works with a much smaller quantity of water than is required in boilers of present construction, and as, in addition, all parts'thereof are of a configuration that will best resist strain namely, either cylindrical or spherical-any risk of explosion is reduced to a minimum. The generator is consequently particularly adapted for use in connection with motor-err worm, several thereof may be used.

a horizontal central tube, a, rotating in horizontal bearings at its ends, and which is partly filled with water. On the rotation of thistube at a suitable speed the inner surface thereof is continually moistened with water, and each part of this surface passes at each revolution in contact with the water lying in the lowest part of the tube. The tube a being heated from the outside, the whole surface thereof constitutes a heatingsurface. In order to increase this heating-surface to any required eX- tent and to obtain a forced circulation of the water, the tube a is surrounded by a helical tube or Worm, j, the ends of which open into the central tube; or, in place of a single such As the worm j rotates with the central tube it re ceives from the latter at a a certain portion of the water, which is led along the several convolutions of the worm as this rotates, and after as many revolutions have taken place as there are coils in the helix the water is discharged at a into the central tube again. Thus a forced circulation of the water is elfected,not

only in the helical tube, but also in the central tube, from one end to the other. The inner surface of the helical tube is also continuously moistened by the rotating motion, and is brought in contact with the bodies of water lying in the bottoms of the several coils, and consequently the entire combined surface of the central tube, a, and the helical tube j, inclosed in a heating-chamber, will constitute a heating-surface. The steam generated is led off through a helical tube, 70, that communicates with one end, at a rwith the central tube, a, and with the other end, at a, with a chamher, it, formed in the central tube. In order that under normal conditions no water may find its way into the steam-pipe 70, an inwardlyprojecting branch pipe, n, is provided in the central tube at (L The steam having to pass through the entire length of the helical tube is, rotating with tube a, in order to pass into the chamber m, it is effectually dried by this means, and eventually passes from m through the pipe f into a steam-chest (notshown) provided with suitable safety apparatus, such as pressure gage and safety-valve. The feedwater is continuously fed into the central tube, a, at d, in such manner as to maintain a constant water-level in the latter, the branch pipe 11 being made to project to such an extent into the tube a that when in its lowest position it is exactly level with the normal water-level in a. If, now, the water-level in a should rise beyond the normal height, the excess of water will pass at each revolution of the generator into the pipe at, and will be led off through the tube 7;, whereby, owing to the heat to which it is exposed in this tube, it will be wholly or partly evaporated, the remainder, if any, passing into the chamber m, and thence into the steam-chamber. The steam-pipe it therefore serves also for carrying off any excess of water that may flow into the central tube.

The steam-generator may be supported in its horizontal position either by means of bearing-rollers c, as indicated in dotted lines, or by ordinary bearings suitably arranged, and it can be rotated by any suitable known means. Its speed of rotation will depend upon its size, and should be such that its inner surface always remains moistened with water. The generator rotates in a casing, b, of metal or brick-work, which is preferably so arranged that by lifting off a cover or several sectional covers the generator is readily accessible, so that on rotating the same every part thereof can be examined. \Vith the casing is combined a suitable heating-furnace, (not shown,) the flames or combustion-gases from which circulate round the generator and heat it to a uniform degree in all its parts in consequence of its rotation.

In order to enable the generator to be readily cleansed, it is advisable to close the ends of the central tube with removable bonnets b, and

with a revolving central tube, a, partly filled with water and heated from its outside, of a helical steam-eduction pipe, k, surrounding the said tube and having one end connected to a steam-chamber, m, separate from the tube a, and the other end projecting into said tube as far as to merely touch the normal water-level while tube a is rotating, substantially as and for the purpose set forth.

2. In a steam-generator, the combination, with a revolving central tube, a, partly filled with water heated from its outside and surrounded by a coiled water-pipe, j, the ends of which are connected to the said central tube, of a steam eduction pipe, k, helically surrounding the central tube, a, substantially as and for the purpose set forth.

3. In combination with the main generating-chamber journaled to revolve on its longitudinal axis, a water-circulating tube carried thereby and communicating therewith, and a steam-conveying tube or pipe,also communicating with the main chamber, both the water-circulating tube and the steam-conveying tube being adapted to revolve with the main chamber, substantially as shown and described.

In testimony whereof I ailix my signature in presence of two witnesses.

ALFRED MUSIL.

\Vitn esses:

EDMUND J USSEN, Orro SGHIFFER. 

